Secondary battery.



Patented 0m16.190s.

'einen sri/riens PATENT ernten.

WILLIAM' IIonRIsoN, or vonioiieo, ILLINOIS.

SECONDARY BATTERY.

No. 900,571. Speccation of Application and June s, isos, sensi No. Icom;

To all whom 'it may concern: Y 4 l Be it known that l, TiHLiiiAM MORRISON, a citizcn'of the United States of Arlinieroa, and resident of Chicago, Cook county, Illinois, have invented a certain new and useful Inu provenient in Secondary Batteries, (Case BJ of which the following is a specification.

My invention relates to certain improvements in that type of battery in which there is analkaline solution and zlnc'. as one of the active elements. I

The object of my present invention is to provide aninsulatoror insulating member which shall insulate the sides of the cell from the solution and from the negative electrode.

This improvement constitutes a feature of invention to be used in connection with' the character of battery described and claimed by me in anjapplication "filedconcurrently herewith. Case, Serial Number-'160,645

Refcrence'may now be had to the accompanying drawings in which- A Figure l is a cross-sectional view through the complete battery, showing the insulating member in position. 2 isa perspective View of the saine. Fig. 3 is a perspective view of the'insulating band shown about the insulating protector.v

Although I have described fully and con1.

pletely the character of battery with which myinvention is to be employed in an applis. catlon to which I have previously referred, I

' will herein describe generally the essential elements of construction of thatjbattery in order to demonstrate the purpose of the said insulator constituting my present invention.`

I preferably employ a metal cell which may be of copper or other suitableinetal, and isdesignated at -A. "lliithin this metal cell and disposed in a substantially horizontalplane at the bottoni thereof is'a positiveelectrode B .made u) of a nuiliber of .superimposed screens, w ich electrode is `fully described and its functions particularly pointed out in the said application to which I ave made reference. Above this positive electrode is the insulating protedtor C', which I have de# scribed and4 particularly claimed in'another application iiled concurrently herewith. Resting u on the insulating protector is a negative e ectrode D of a suitable character, A

and this negative electrode is connected by a` conductor Dl wlth ablnding post D3 exnegativelectrode.

Letters Patent. Patented Oct. 6, 1908.

Renewed December 9, 1901. Serial No. 405,72?.

i l tended through the cover D4 and thelinsulating band E is between the sides of the cell and the insulating protector.'

Resting at its lower edges upon the positive electrode, and so adjiisted in place as to be adjacent to the inner exposed sides ofthe 4cell A, is the insulator E which constitutes Iny present invention. This insulator is a' band of insulating material, as shown in Fig. 3, which extends completely around. the interior sides of the cell, and protects the inner sides of said cell at all exposed points. As

-said insulator and as its lower edges bear upon -the positive electrode, it serves also the purpose of keeping the said electrode in place. Also is-fprovided a second or inner insulator', which is designated. at H, and extends about the interior ol the coll above the This inner insulator is disposed betweenthe cover and the negative electrode. When, therefore, the cover is pressed down and soldered in place, the insulator'E bears upon' the positive electrode and the inner insulator llV in bearingr ppon the top' of the negative electrode causes the latter to press downward upon the insulating protector C., whiclrlatter beiner disposed'between the negative and positive electrodes serves to bind the latter together and maintain the positive electrode in place. lt will be observed that this insulating band E insulates the sides of the cell from the electrical action of the battery during the charge and discharge.

Asstated in an application to Awhich I have previously referred, lthe object of my invention there claimed is to concentrate the deposit of zinc upon the electrode at the` bottom of the cell, which zincwhen so deposited isin a position in which gravity does not tend to remove the zinc from this support. have found that the metal cell aliords the most conveninet means for embodying my invention as described in said application., although-it is notabsolutelyessential to the same, but when used means should prefer ably .be provided for preventingr the deposit of thea zinc upon the sides of the cell, which.

. in the jarof the battery is liable to fall and. .cause short oircuiting and other difficulties. The insulating band also, it will be observed, insulates the negative electrode 'from .the

the cover D3 bears upon the top edges of .the

Having thus described my invention what I claim as new and desire to secure by t Letters-Patent is 1. In a reversible electric galvanic battery in which there is an alkaline solution and .zine is one of tlie positive active elements,

an electrode disposedin a substiintially liori zoiital plane at or near the bottoni of tlie cell, und an insulating band extendingr about and protecting the inner surfaces of tlie sides of tlie cell against electrical action.

2. In a reversible electric galvanie battery in which there is an alkaline solution and zine is one of the active positive elements, a positive electrode disposed iii a substantially horizontal plane at or iieiir tlit. bottoni of ilie cell, and an insulating bund extending about tlie interior sides o tlie cell and resting' :it its I lower edges upon tlie positive electrode.

3. In a reversible electricI lvalvaiiic but tei-v t in wliicli tliere is an alkaline solution and xiii(l is one of tl'ie active elements, and :i iiietiil cell, an electrode disposed iii :i siibstulitiiillyV horizontal plane :it or near tlie bottoni oli tlio metal cell, and an insulating band extending Q about and protecting tlie inner side surfaces of t-lie iiietal coll against,- electi'ical iictioii.

Signed by ine at (iliiciigo, t-ooli county, Illinois, tliis (Stili day otlJiuie, T903.

WlLlililiM MUR lilSON. Witnesses:

Ciiiis. C. Buiiiiiiin', WM. A. I IA uni-uis. 

